Dicrananthera C. Presl. is a monospecific genus of the tribe Marcetieae, comprising perennial herbs typically occurring in areas adjacent to wetlands. The species exhibits a disjunct distribution, with confirmed records in both the Amazon and Atlantic Forest domains. Dicrananthera hedyotidea is morphologically distinct from other genera within the tribe by the presence of dimorphic stamens bearing subulate ventral appendages. This study reports the first occurrence of D. hedyotidea in the state of Maranhão, and provides a taxonomic treatment, an updated geographical distribution, and an ecological niche model for the species in South America. The potential distribution was estimated using species distribution modeling (SDM) techniques implemented in the R software environment. This new record extends the known range and improves the understanding of the species' distribution in Maranhão, underscores the floristic diversity of the Baixada Maranhense region, and reinforces the importance of further botanical surveys and conservation efforts in this part of Brazil.

Here, we describe and illustrate the new species Ouratea oberdanii Fraga & Deccache, which is named after Dr Oberdan José Pereira. This new species is found in the mountainous regions of the evergreen Atlantic Forest in the Brazilian state of Espírito Santo. Ouratea oberdanii is similar to O. linearis (A.Gray) Sastre & Offroy and O. parviflora (DC.) Baill. It can be distinguished by its habit, with branches that are reclining and pendulous, the leaf vein pattern, with the presence of intramarginal veins, its persistent stipules and bracts, and the presence of indumentum on the midvein of the adaxial surface of petals and on the anthers. We also provide a distribution map, preliminary conservation status assessment, taxonomic notes, and an identification key for Ouratea species from Espírito Santo.

Amanita theophili sp. nov., a member of Amanita sect. Amidella (Amanitaceae), is described from temperate pine‐oak forests in Morelos, central Mexico. Morphological features and phylogenetic analyses based on ITS and 28S rDNA sequences confirm its distinct taxonomic status. The new species is morphologically similar to A. peckiana and A. volvata and phylogenetically related to A. rufobrunnescens and Amanita ‘insolens', and the distinctions are discussed here. This species adds to the two previously recognized members of sect. Amidella in Mexico and to the approximately 30 species known worldwide. The discovery expands the documented diversity of Amanita sect. Amidella .

Based on morphological evidence three new deciduous species of Berberis are proposed – Berberis pseudovirescens , Berberis orbicularis and Berberis tawangensis ,the types being collected in the Tawang and West Kameng districts of Arunachal Pradesh, India. Detailed descriptions and diagnoses, along with colour photoplates, distribution information and conservation status are provided. All these new species are provisionally evaluated as ‘Data Deficient' (DD) following IUCN guidelines.

Primula himalayana sp. nov., a new species of Primulaceae, is described and illustrated from Tawang, Lutrem, 4238 m a.s.l., Arunachal Pradesh, India. It grows under Juniperus and Berberis scrub forest in an alpine meadow. The new species belong in Primula section Cordifoliae and is resembling P . gambeliana , but differs from the latter by the lamina puberulent with a white protuberance on the tips of the teeth, petiole 2‒3 times longer than lamina and white puberulent, scape long with many flowers, flowers yellow with orange‐yellow center and along corolla tube, corolla lobes elliptic, anther basifixed, and ovary cylindrical without any teeth.

Meyna grisea and M . peltata , two new records from Imphal Valley, Manipur, India, characterised by a capitate stigma with 4–5 divergent, spreading lobes on a globose base, and a prominent peltate stigma, respectively, are described and illustrated here. Photographs, key to the species, along with their coordinates and diagnostic characters in comparison with previously reported species from India, are provided.

A new species, Tetrataenium paikadae C.Rekha, Manudev & Prasanth (Apiaceae), is described from the State of Kerala, India. The new species is characterised by its hirsute to hispid stems, broadly ovate or rounded leaflets, long petioles with hirsute leaf sheaths, tomentose rays, symmetric flowers, ovate‐lanceolate involucel bracteoles, and mericarp with four commissural vittae. A detailed account of its habitat, description, field photographs and photo plates, keys and a comparison table with allied species are provided here.

A new species of Lentibulariaceae, Pinguicula brendae Rodríguez‐Ramírez, H.Shimai & A.R. Andrés‐Hernández, is described based on its unique morphological characteristics. This species is restricted to limestone rock walls in the San Bartolo Tutotepec municipality, central‐eastern Hidalgo, Mexico, where it inhabits a single locality on vertical, north‐facing limestone cliffs at approximately 1985 m a.s.l. Pinguicula brendae is morphologically similar to Pinguicula crassifolia but is distinguished by its compact, ruby‐colored overwintering rosettes (3–10 mm in diameter), with obovate‐oblong, cuneate at base summer foliage, and a violet‐brown, single‐flowered scape (38–60 mm tall) that is densely and entirely covered by non‐glandular trichomes. The corolla is distinctly bilabiate, ruby‐colored with a white throat and dense white trichomes, and the spur is violet‐gray, slightly curved downwards, and 8.6–10.5 mm long. Pinguicula brendae grows on calcareous Acrisols and Andosols, often amongst bryophytes and ferns. It exhibits a clear phenological shift, changing from ruby winter rosettes to ruby summer leaves (which are rarely green or yellowish‐green) and flowering from late February to early March. The species is provisionally assessed as ‘Critically Endangered' (CR A1a, B1a) because of its extremely limited distribution and small population of fewer than 250 mature individuals and ongoing anthropogenic threats. Details regarding its distribution, ecology, phenology, and a preliminary conservation evaluation are provided.

Isoetes × atruensis hyb. nov. is shown to be a triploid (2 n = 3× = 33 + 1) sterile interspecific hybrid between diploid (2 n = 2× = 22 + 1) I. coromandelina and tetraploid (2 n = 4× = 44 + 1) I. rajasthanensis . It has been found in two locations in Rajasthan, India. It is a perennial, shallow‐water aquatic best distinguished by a set of morphological characteristics and a ploidy level that is intermediate between its putative parents. Isoetes × atruensis is the second Isoetes hybrid taxon reported from the Indian subcontinent and the first to be confirmed from multiple locations on the subcontinent.